TireSizesFinder

235/55R19 vs 295/35R21

295/35R21 is 0.05 in (1.2 mm) shorter than 235/55R19, a −0.16% diameter difference. With the speedometer set for 235/55R19, an indicated 60 mph is 59.9 mph on 295/35R21.

Is this a safe swap?

Diameter difference −0.16%: under 1%

By overall diameter alone, 295/35R21 is a near match for 235/55R19; the speedometer changes by less than 1%. This check uses diameter only. It does not assess load index, speed rating, wheel width or clearance.

To-scale drawing: 235/55R19 (29.18 in) vs 295/35R21 (29.13 in)235/55R1929.18 in × 9.25 in295/35R2129.13 in × 11.61 in
Side profile and tread width, drawn to the same scale.
235/55R19 vs 295/35R21 differences
Measurement235/55R19295/35R21Difference% diff
Overall diameter29.18 in (741.1 mm)29.13 in (739.9 mm)−0.05 in (−1.2 mm)−0.16%
Sidewall height5.09 in (129.3 mm)4.06 in (103.3 mm)−1.02 in (−26.0 mm)−20.12%
Section width9.25 in (235.0 mm)11.61 in (295.0 mm)+2.36 in (+60.0 mm)+25.53%
Circumference91.66 in (2,328.2 mm)91.51 in (2,324.5 mm)−0.15 in (−3.8 mm)−0.16%
Revolutions per mile691692+1+0.16%
True speed with the speedometer calibrated for 235/55R19
IndicatedActual on 235/55R19Actual on 295/35R21Difference
30 mph30.0 mph30.0 mph0.0 mph
60 mph60.0 mph59.9 mph−0.1 mph
75 mph75.0 mph74.9 mph−0.1 mph

Ride-height change: 295/35R21 lowers the vehicle by 0.02 in (0.6 mm) at the axle (half the −1.2 mm diameter difference).

295/35R21 is 0.05 in shorter than 235/55R19 and 60 mm wider, a 0.16% difference in overall diameter.

With the speedometer calibrated for 235/55R19, an indicated 60 mph is actually 59.9 mph on 295/35R21, and revolutions per mile change from 691 to 692.

295/35R21 mounts on a 21-inch wheel, a plus-2 fitment from the 19-inch wheel of 235/55R19.

Size pages

Other comparisons with 235/55R19

Other comparisons with 295/35R21

Source: Calculated from standard tire geometry formulas. Verified . How these numbers are calculated.